You are the Guesser in a Twenty Questions benchmark. Identify the hidden subject using as few counted turns as possible. BEGIN provides only its broad category. The variation_token has no clues; do not interpret, mention, or repeat it. The category in BEGIN has a broad meaning: - person: a real human, living or historical. - fictional_character: an invented character from a story, book, comic, film, television, game, or another fictional work. - mythological_figure: a figure from mythology or traditional legend. - video_game_character: a character known from video games. - thing: a broad category covering natural and human-made entities, living or nonliving, whole entities or parts of them. Possibilities include everyday objects, tools, machines, materials, food, animals, plants, body parts, natural structures, geographical features, celestial bodies, natural phenomena, and concepts. These possibilities are not exhaustive. The target may be a general kind or one particular instance. Use questions to narrow the supplied category. These definitions are not a list of targets. Use ASK for a factual question that distinguishes candidates. Never use ASK to confirm a specific identity. Use GUESS with a name and short identifying description to name a candidate. ASK has five possible replies: - YES or NO: the evidence establishes that answer to the exact question. - RATHER_YES or RATHER_NO: evidence leans that way, but is not strong enough for a firm answer. Treat this as a clue; keep candidates fitting the opposite answer possible. - UNKNOWN: no reliable direction. It supports neither answer. Ask clear questions about verifiable properties. "Can", "sometimes", "usually", "always", and "mainly" ask different things. Do not assume that one property proves another or rules out alternatives. Qualified replies express uncertainty about your question, not how often a property applies. Before narrowing heavily, check your key assumption with a different property. After rejected guesses, reconsider earlier assumptions as well as candidates. Answers can be mistaken; check another property when stuck. Do not ignore an answer merely because it conflicts with a preferred candidate. Each ASK, rejected GUESS, or format error before the limit costs one turn. A correct GUESS costs none. After 40 counted turns, make one final GUESS; ASK is then forbidden. Identity validation uses only YES, NO, or UNKNOWN. UNKNOWN on GUESS ends the game without success. FORMAT_ERROR means your output broke the contract, was not checked for correctness, and cost one turn. Retry using its displayed formats if a turn remains. Return only the required JSON object with exactly one result action. No explanations, reasoning, or extra fields.
- Questions
- 16
- Outcome
- Solved
- Format errors
- No errors
- Duration
- 6m 8s
- Round cost
- $0.1384 All 17 turns
Transcript
Questions and answers.
Turns are shown in the order they happened. Each shows the Guesser's question or guess, then the final checked answer.
Exact Guesser setupSystem message and BEGIN event
The Guesser received these messages at the start of the round. The BEGIN message holds the broad category and a code made from the base seed and round number, which reveals nothing about the subject.
{"category":"thing","event":"BEGIN","variation_token":"EAQCORIU"}Valid replies are shown in the required format. Rejected replies are shown separately, without provider or call IDs.
Q1
1 · Guesser asks
Is it man-made?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it man-made?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Eyebrow: The arch of hair on the brow.Open elementsofmorphology.nih.gov (opens in a new tab)
The line of short hairs above each eye in humans.Open dictionary.cambridge.org (opens in a new tab)
2 · Answer check returns No
Q2
1 · Guesser asks
Is it a living organism?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it a living organism?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Source summary (model-reported)
The eyebrow is listed as an instance of a class of anatomical entity, a facial feature, human facial hair, and a set of facial hairs.
Open wikidata.org (opens in a new tab)Source summary (model-reported)
The article reviews the biology, structure, and function of eyebrow hair, including the structure and function of the hair follicle and eyebrow hair growth cycles.
Open pubmed.ncbi.nlm.nih.gov (opens in a new tab) 2 · Answer check returns No
Q3
1 · Guesser asks
Is it a celestial body?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it a celestial body?"}}Oracle evidence3 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
An eyebrow is an area of short terminal hairs above each eye that follows the shape of the lower margin of the brow ridges of some mammals.Open en.wikipedia.org (opens in a new tab)
Source summary (model-reported)
Eyebrow: The arch of hair on the brow. The eyebrow is described as part of the anatomy of the periorbital region.
Open elementsofmorphology.nih.gov (opens in a new tab)Source summary (model-reported)
An eyebrow is the line of short hairs that humans have above each eye.
Open dictionary.cambridge.org (opens in a new tab) 2 · Answer check returns No
Q4
1 · Guesser asks
Is it a geographical feature on Earth?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it a geographical feature on Earth?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Eyebrow: The arch of hair on the brow (Fig. 2).Open elementsofmorphology.nih.gov (opens in a new tab)
Source summary (model-reported)
The eyebrow is classified as an anatomical entity, facial feature, human facial hair, and set of facial hairs.
Open wikidata.org (opens in a new tab) 2 · Answer check returns No
Q5
1 · Guesser asks
Is it a natural phenomenon?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it a natural phenomenon?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Source summary (model-reported)
An eyebrow is an area of short terminal hairs above each eye that follows the shape of the lower margin of the brow ridges of some mammals.
Open en.wikipedia.org (opens in a new tab)Source summary (model-reported)
A phenomenon is something (such as an interesting fact or event) that can be observed and studied. Examples of natural phenomena include lightning and earthquakes.
Open britannica.com (opens in a new tab) 2 · Answer check returns No
Q6
1 · Guesser asks
Is it a part of a living organism (such as a body part)?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it a part of a living organism (such as a body part)?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Source summary (model-reported)
The NIH's anatomy terminology identifies the eyebrow within the human periorbital region and defines it as "the arch of hair on the brow."
Open elementsofmorphology.nih.gov (opens in a new tab)Source summary (model-reported)
The page describes the eyebrow as an area of coarse skin hairs above the eye and categorizes it under facial hair, facial features, and eye-related anatomy.
Open wikidoc.org (opens in a new tab) 2 · Answer check returns Yes
Q7
1 · Guesser asks
Is it part of an animal (including humans)?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it part of an animal (including humans)?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Eyebrow: The arch of hair on the brow... The eyebrows usually extend further laterally than medially, in relation to the eye.Open elementsofmorphology.nih.gov (opens in a new tab)
eyebrow noun... the line of short hairs above each eye in humansOpen dictionary.cambridge.org (opens in a new tab)
2 · Answer check returns Yes
Q8
1 · Guesser asks
Is it a part of the human body?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it a part of the human body?"}}Oracle evidence3 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Source summary (model-reported)
The anatomy of the various structures is described in more detail below. ... Eyebrow: The arch of hair on the brow (Fig. 2) ... Based on observed localized abnormalities of the eyebrow, it is useful to divide the eyebrow into three parts: medial, middle (central), and lateral.
Open elementsofmorphology.nih.gov (opens in a new tab)Source summary (model-reported)
Your eyebrows are the curved areas of hair on your face above each of your eyes. ... Definitions of eyebrow: noun the arch of hair above each eye.
Open vocabulary.com (opens in a new tab)the line of short hairs that humans have above each eyeOpen dictionary.cambridge.org (opens in a new tab)
2 · Answer check returns Yes
Q9
1 · Guesser asks
Is it an internal organ or structure (not visible from the outside of the body)?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it an internal organ or structure (not visible from the outside of the body)?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Source summary (model-reported)
The NIH Elements of Morphology page defines the eyebrow as “The arch of hair on the brow,” located in the periorbital region.
Open elementsofmorphology.nih.gov (opens in a new tab)Source summary (model-reported)
The page describes the eyebrow as “an area of coarse skin hairs above the eye” and identifies it as a facial feature.
Open wikidoc.org (opens in a new tab) 2 · Answer check returns No
Q10
1 · Guesser asks
Is it located on the head or face?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it located on the head or face?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Source summary (model-reported)
Eyebrow: The arch of hair on the brow. The eyebrow overlies the bony supraorbital ridge and is described within the anatomy of the periorbital region.
Open elementsofmorphology.nih.gov (opens in a new tab)Source summary (model-reported)
The male eyebrow sits along the supraorbital ridge. The study analyzes the eyebrow's three-dimensional relation to the eye and supraorbital rim.
Open pubmed.ncbi.nlm.nih.gov (opens in a new tab) 2 · Answer check returns Yes
Q11
1 · Guesser asks
Does a typical human have two of them?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Does a typical human have two of them?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Source summary (model-reported)
The NIH describes the eyebrow as an arch of hair on the brow and discusses the eyebrows in relation to the eyes, including their medial, middle, and lateral parts.
Open elementsofmorphology.nih.gov (opens in a new tab)Source summary (model-reported)
The source states that genetics determine whether a person has two distinct eyebrows or a single connected brow, referred to as a “unibrow.”
Open atlanticeyeinstitute.com (opens in a new tab) 2 · Answer check returns Yes
Q12
1 · Guesser asks
Is it used for seeing?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it used for seeing?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Source summary (model-reported)
Britannica states that eyebrows act as a barrier, diverting moisture away from the eyes, capturing small particles, and shielding the eyes from sun glare. It also describes their role in nonverbal communication.
Open britannica.com (opens in a new tab)Source summary (model-reported)
CooperVision says eyebrows help protect the eyes by keeping sweat, rain, snow, dirt, and dust out, working with the forehead, eyelids, and eyelashes.
Open coopervision.com (opens in a new tab) 2 · Answer check returns No
Q13
1 · Guesser asks
Is it used for hearing?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it used for hearing?"}}Oracle evidence3 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Source summary (model-reported)
The main function of the eyebrows is to prevent moisture... from flowing into the eye... Eyebrows also prevent debris... as well as providing a more sensitive sense for detecting objects being near the eye... [and] have an important facilitative function in communication.
Open wikidoc.org (opens in a new tab)Source summary (model-reported)
Hearing (audition) is the ability to sense sound waves, and the ear is the organ that senses sound. The outer ear, middle ear, and inner ear contain the structures involved in hearing, including the cochlea.
Open bio.libretexts.org (opens in a new tab)Source summary (model-reported)
Eyebrows act as a barrier, diverting moisture away from the eyes... and capturing small particles before they reach the eye. Beyond their protective function, eyebrows are also great for nonverbal communication.
Open britannica.com (opens in a new tab) 2 · Answer check returns No
Q14
1 · Guesser asks
Is it part of the nose?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it part of the nose?"}}Oracle evidence3 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Brow: The soft tissue at the junction of the frontalis and orbicularis oculi muscles, overlying the bony supraorbital ridge. Eyebrow: The arch of hair on the brow.Open elementsofmorphology.nih.gov (opens in a new tab)
Source summary (model-reported)
The male eyebrow sits along the supraorbital ridge and has a flat contour. The study describes the eyebrow's relation to the eye and supraorbital rim.
Open pubmed.ncbi.nlm.nih.gov (opens in a new tab)The glabella, in humans, is the area of skin between the eyebrows and above the nose. The term also refers to the underlying bone.Open en.wikipedia.org (opens in a new tab)
2 · Answer check returns No
Q15
1 · Guesser asks
Is it primarily composed of hair?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it primarily composed of hair?"}}Oracle evidence2 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
The source defines the eyebrow as “The arch of hair on the brow” and describes the hairs in its medial, middle, and lateral parts.Open elementsofmorphology.nih.gov (opens in a new tab)
Source summary (model-reported)
The PubMed-listed review concerns the biology, structure, and function of eyebrow hair and identifies eyebrow hair follicles as sharing the basic structure of hair follicles elsewhere on the body.
Open pubmed.ncbi.nlm.nih.gov (opens in a new tab) 2 · Answer check returns Yes
Q16
1 · Guesser asks
Is it located above the eyes?
Recorded Guesser outputRequired JSON format
{"result":{"action":"ASK","description":null,"name":null,"question":"Is it located above the eyes?"}}Oracle evidence3 model-reported sources
The Oracle reported these excerpts and URLs. They are not independently checked.
Source summary (model-reported)
Eyebrow: The arch of hair on the brow ... The eyebrows usually extend further laterally than medially, in relation to the eye.
Open elementsofmorphology.nih.gov (opens in a new tab)eyebrow ... the ridge over the eye or the hair growing usually in a line or arch on the skin over itOpen merriam-webster.com (opens in a new tab)
An eyebrow is an area of short terminal hairs above each eye.Open en.wikipedia.org (opens in a new tab)
2 · Answer check returns Yes
G
1 · Guesser guessesNot counted
eyebrow
a short strip of hair growing above each human eye
Validator rationale The proposal identifies the human eyebrow as the anatomical strip of short hairs above the eye, matching the target body feature and excluding unrelated objects.
Recorded Guesser outputRequired JSON format
{"result":{"action":"GUESS","description":"a short strip of hair growing above each human eye","name":"eyebrow","question":null}} 2 · Validator returns Yes